Designing Highly Photoactive Hybrid Aerogels for In-Flow Photocatalytic Contaminant Removal Using Silica-Coated Bacterial Nanocellulose Supports

Página do item simplificado
dc.contributor.authorAlmeida da Silva, Thaís Caroline [UNESP]
dc.contributor.authorMarchiori, Leonardo [UNESP]
dc.contributor.authorOliveira Mattos, Bianca
dc.contributor.authorUllah, Sajjad
dc.contributor.authorBarud, Hernane da Silva
dc.contributor.authorRomano Domeneguetti, Rafael [UNESP]
dc.contributor.authorRojas-Mantilla, Hernán Dario [UNESP]
dc.contributor.authorBoldrin Zanoni, Maria Valnice [UNESP]
dc.contributor.authorRodrigues-Filho, Ubirajara Pereira
dc.contributor.authorFerreira-Neto, Elias Paiva
dc.contributor.authorRibeiro, Sidney José Lima [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversity of Peshawar─UOP
dc.contributor.institutionUniversity of Araraquara─UNIARA
dc.contributor.institutionUniversidade Federal de Santa Catarina (UFSC)
dc.date.accessioned2023-07-29T16:13:57Z
dc.date.available2023-07-29T16:13:57Z
dc.date.issued2023-05-17
dc.description.abstractThis study explores the use of silica-coated bacterial nanocellulose (BC) scaffolds with bulk macroscopic yet nanometric internal pores/structures as functional supports for high surface area titania aerogel photocatalysts to design flexible, self-standing, porous, and recyclable BC@SiO2-TiO2 hybrid organic-inorganic aerogel membranes for effective in-flow photo-assisted removal of organic pollutants. The hybrid aerogels were prepared by sequential sol-gel deposition of the SiO2 layer over BC, followed by coating of the resulting BC@SiO2 membranes with a porous titania aerogel overlayer of high surface area using epoxide-driven gelation, hydrothermal crystallization, and subsequent supercritical drying. The silica interlayer between the nanocellulose biopolymer scaffold and the titania photocatalyst was found to greatly influence the structure and composition, particularly the TiO2 loading, of the prepared hybrid aerogel membranes, allowing the development of photochemically stable aerogel materials with increased surface area/pore volume and higher photocatalytic activity. The optimized BC@SiO2-TiO2 hybrid aerogel showed up to 12 times faster in-flow photocatalytic removal of methylene blue dye from aqueous solution in comparison with bare BC/TiO2 aerogels and outperformed most of the supported-titania materials reported earlier. Moreover, the developed hybrid aerogels were successfully employed to remove sertraline drug, a model emergent contaminant, from aqueous solution, thus further demonstrating their potential for water purification.en
dc.description.affiliationInstitute of Chemistry São Paulo State University─UNESP, São Paulo
dc.description.affiliationInstitute of Chemistry of São Carlos University of São Paulo─USP, São Paulo
dc.description.affiliationInstitute of Chemical Sciences University of Peshawar─UOP
dc.description.affiliationUniversity of Araraquara─UNIARA, São Paulo
dc.description.affiliationDepartment of Chemistry Federal University of Santa Cantarina─UFSC, Santa Catarina
dc.description.affiliationUnespInstitute of Chemistry São Paulo State University─UNESP, São Paulo
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipHigher Education Commission, Pakistan
dc.format.extent23146-23159
dc.identifierhttp://dx.doi.org/10.1021/acsami.3c02008
dc.identifier.citationACS Applied Materials and Interfaces, v. 15, n. 19, p. 23146-23159, 2023.
dc.identifier.doi10.1021/acsami.3c02008
dc.identifier.issn1944-8252
dc.identifier.issn1944-8244
dc.identifier.scopus2-s2.0-85159611407
dc.identifier.urihttp://hdl.handle.net/11449/249963
dc.language.isoeng
dc.relation.ispartofACS Applied Materials and Interfaces
dc.sourceScopus
dc.subjectaerogel
dc.subjectbacterial cellulose
dc.subjectin-flow decontamination
dc.subjectphotocatalytic membrane
dc.subjectSiO2
dc.subjectTiO2
dc.titleDesigning Highly Photoactive Hybrid Aerogels for In-Flow Photocatalytic Contaminant Removal Using Silica-Coated Bacterial Nanocellulose Supportsen
dc.typeArtigo
unesp.author.orcid0000-0001-9931-690X[4]
unesp.author.orcid0000-0001-9081-2413[5]
unesp.author.orcid0000-0002-9810-7564[10]
unesp.author.orcid0000-0002-8162-6747[11]

Arquivos

Coleções

Artigos - Química Analítica - IQ
Artigos - Química Inorgânica - IQ